Evidence row 1038959

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/batch"
    ]
  ],
  "name": "Postcode Context",
  "owner_address": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
  "raw": {
    "accepts": [
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
        "scheme": "exact"
      }
    ],
    "description": "GET /api/v1/batch?postcodes=... - Bulk Postcode Enrichment (comma-separated query string)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "postcodes": "SW1A 1AA,BB7 3BB,EH1 1YZ"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "cohort_summary": {
                "total_matched": 3,
                "total_requested": 3
              },
              "results": [
                {
                  "location": {
                    "local_authority": "City of Westminster",
                    "postcode": "SW1A 1AA"
                  },
                  "summary_for_ai": {
                    "affluence_tier": "Ultra-Prime"
                  }
                }
              ]
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v1/batch",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "postcodes": {
                      "default": "SW1A 1AA,BB7 3BB,EH1 1YZ",
                      "description": "Comma-separated list of 1 to 50 postcodes to enrich (e.g. SW1A 1AA,BB7 3BB,EH1 1YZ)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "postcodes"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792929344/bazaar-icons/9d2de4e5c0743e69.jpg",
    "lastUpdated": "2026-10-29T00:21:55.445Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-29T00:21:55.272Z"
    },
    "resource": "https://api.postcodecontext.uk/api/v1/batch",
    "serviceName": "Postcode Context",
    "tags": [
      "postcode",
      "demographics",
      "property",
      "census",
      "geospatial"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "GET /api/v1/batch?postcodes=... - Bulk Postcode Enrichment (comma-separated query string)"
}

What the leaf hashes

{"body":"40cb4f47a060f7a0ea6859723ec7fd51ef3d521954a7dccebb61ab79c9ffdd1a","id":1038959,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793298277142312,"prev":751055,"subject":"x402_bazaar:https://api.postcodecontext.uk/api/v1/batch","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0xd439422f045867b58524063c62a84c2bc72eea116f3120f05334b1d244661884
2. 0x5280fd20620c582090c4e49ba79e17fbbcea4a26683615b6b9c1230faaeaf364
3. 0xb630cffaf17ddc0326160b5a018f4fa1434e213d35ba6e434692582ead30c43c
4. 0x8ed34ec70741803466c4ca49527152105c282b78f2a499150904777ff4d73008
5. 0x38ab7cbac35a312b1abf5aec0a242ab75dd2ee48f23afdc25f0585b0bbe681dc
6. 0x41ddc2062b7ae8a022bef5966a3cd64f88543192f2de250b50e9c0ced0d81f5a
7. 0x74fa6b1914b5a81649b346251f98cc0404448250214711d1f1af94b82b93aa87
8. 0xa4795d150a79cc4f513a2f34f42920d11237e531efbcb61e0139dcd40db8a21c
9. 0x5a051133b3b0171194dff16fa6286f1010f1197ddfa18ea1780571706197f00a
10. 0x5e368e38bf8e78e88df6d16c7a3e59bf4cb1327a25bb9560cf90660705f9baf0
11. 0xf1c98783fcafb3908d7b3aa9ce7cd8fa07eee45fe8785f214e4e18e01b8e4f01
12. 0x8111b8e842d177c62d5a5185b298850a167994d051a0ae51bb7c4e0353359cdf
13. 0xfe28e9e98d6dfa695fe78aeee74c827cd30eb7ca9245a239277f9fb4e1ff47a1
14. 0xc5f320d911e4e74a5ef306d3473fe072ea90372c9b9d8902795503f6d18cc307
15. 0xa7d3fa0a08edea990614977b51a6b3289c357a88d8ca06dcbfe67415a017c0e7
16. 0xa034ebc8d117fbf1ed466b70baa0478bf213b743e1a41cba1d2da7a9f310184d
17. 0x1597ec94933260048e5e583aff1ad0fd44cc49efcd0a994091ed5db4924d7b02
18. 0xe01539ac4c9f9cdf265a9e5c6d99c8da11e70ff0c7175fb23e402d33b9d79785

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1